I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
carbs carobs carbos carboys caribes curbs garbs cribs crabs carabaos caribous corbies grabs grubs kerbs grebes krubis
arbs carbs darbs garbs barbs shrubs urbs ribs drubs cribs drabs forbs sorbs carbos mihrabs burbs grubs rebs turbos carobs verbs cherubs rubs grabs airbus herbs robs kerbs crabs barbes dribs curbs orbs yerbas
carb carbo carboy carabao caribe caribou carob corbie corby crab crabby crib curb garb scarab scarabaei